Logan's true hang-up

Our dog Logan (a freakishly large sheltie) has always had issues. He barks like mad at anything with a running motor and anything with moving wheels. Cars, hair dryers, kids on rollerskates, coffee grinders, bicycles-- you name it! My lovely wife says that she thinks this goes deeper than normal Shetland sheepdog neurosis-- she says that Logan is a Luddite! I found her diagnosis to be one of the funniest things that I'd heard in a while. Besides, it shows that I married a smart cookie.